.scroll-to-top {
    position: fixed;
    right: 1rem;
    bottom: 1rem;
    display: none;
    width: 2.75rem;
    height: 2.75rem;
    text-align: center;
    color: #fff;
    background: rgba(90, 92, 105, 0.5);
    line-height: 46px;
}

    .scroll-to-top:focus,
    .scroll-to-top:hover {
        color: white;
    }

    .scroll-to-top:hover {
        background: #5a5c69;
    }

    .scroll-to-top i {
        font-weight: 800;
    }